67120565797 has 2 divisors, whose sum is σ = 67120565798. Its totient is φ = 67120565796.

The previous prime is 67120565773. The next prime is 67120565803. The reversal of 67120565797 is 79756502176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61948223236 + 5172342561 = 248894^2 + 71919^2 .

It is a cyclic number.

It is not a de Polignac number, because 67120565797 - 2¹⁹ = 67120041509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67120565717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33560282898 + 33560282899.

It is an arithmetic number, because the mean of its divisors is an integer number (33560282899).

Almost surely, 2^67120565797 is an apocalyptic number.

It is an amenable number.

67120565797 is a deficient number, since it is larger than the sum of its proper divisors (1).

67120565797 is an equidigital number, since it uses as much as digits as its factorization.

67120565797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5556600, while the sum is 55.

The spelling of 67120565797 in words is "sixty-seven billion, one hundred twenty million, five hundred sixty-five thousand, seven hundred ninety-seven".